Phone Guy

An unseen deuteragonist that provides exposition and a basic tutorial to the player, “Phone Guy” is an employee of Fazbear Entertainment present within three games of the series, until replaced by other characters that take the same role of providing the player information. Ultimately, while Phone Guy's messages are useful to the player in their exposition and advice, he is not an omniscient source of information, with not all of his advice being truly helpful to the player, leading to misconceptions about game mechanics, and at times lying about or leaving out vital information.

Phone Guy is voiced by Scott Cawthon, the creator of the series. His name was an unofficial nickname provided by the community, up until Five Nights at Freddy's: Help Wanted, where Scott Cawthon is listed as the voice for "Phone Guy," thus canonizing the name.

In FNAF 1
The first game of the series is where the character makes his debut, leaving the player prerecorded messages in which the player learns about the establishment, animatronics, and game mechanics. He does this from Night 1 up to Night 4, where he is suddenly cut off. On Night 5, his expected message is instead replaced by garbled incomprehensible speech, learned to be a heavily distorted reading of "Autobiography of a Yogi" by Paramahansa Yogananda. The same distorted audio (sans clipped screaming) is used for gibberish Bonnie and Chica will speak when outside the player's doors, beginning after Night 3.

His fate is ultimately left unknown, though his death is heavily implied by the animatronic screams at the end of his final call, the only other time animatronics are heard screaming being when they are attacking the player. Chronologically, he is not heard from again after this, save for the tapes in FNAF 3.

In FNAF 2
Phone Guy retains their role of giving the player (sometimes unhelpful) information, but unlike his other appearances, he calls the player rather than leaving prerecorded messages. Like the previous installment, the information Phone Guy gives to the player consists mainly of tips for avoiding the animatronics, though uniquely provides the player updates on what is happening in regards to the establishment as the week continues, and backstory for some of the animatronics.

During his last phone call on Night 6, Phone Guy idly comments how he will likely take the night shift whenever the establishment reopens, likely referencing to later on, when he mentions how he worked the night shift in FNAF 1.

In FNAF 3
Phone Guy's appearance in FNAF 3 is preceded by the presence of another expository character and deuteragonist, Phone Dude. Phone Dude acts as a means of introducing Phone Guy, as the building FNAF 3 takes place in is not owned by or operated by Fazbear Entertainment, requiring some other way to reasonably provide his messages to the player. His messages are found by Phone Dude, described as "vintage audio training cassettes" that are then played after Phone Dude's dialogue in Night 2, where Phone Guy then takes over in place of dialogue and exposition entirely from then on.

His dialogue does not provide any advice or insight into game mechanics, due to the tapes being purposed only for exposition to the player, and as training for how to use mascot suits, company policies , and changes to the locations for Fazbear Entertainment. However, it is incredibly useful information regarding the antagonist of the game, even if not immediately so by way of understanding how to evade him.